[SI-LIST] Re: DDR2 IMPEDANCE

Hello Kenny,
Are you designing this type interface?  If so then take a look at the AMCC spec:
https://www.amcc.com/MyAMCC/retrieveDocument/PowerPC/440EP/PPC440EP_DS2002_v1_24.pdf

There should be some board guideline information for the DDR interface.  You 
will have to simulate.

Simulating an existing interface?  If you can obtain a board file then the 
traces (impedances) can be extracted for the interface.

-Jory


 Kenny Frohlich <kenny_frohlich@xxxxxxxxx> wrote: Hi All,
Can someone please tell me where I can find information on DDR2 impedances (ie. 
what is the impedance of CLK? Data? Address? Command?)? 
We use PowerPC PPC440EP and on-board DDR2 SDRAMs.
  Thank you.
   
  Regards,
Kenny
 
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